<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <link:roleRef roleURI="http://www.oildri.com/role/AccumulatedOtherComprehensiveIncomeDetails" xlink:href="odc-20161031.xsd#AccumulatedOtherComprehensiveIncomeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/AccumulatedOtherComprehensiveIncomeNarrativeDetails" xlink:href="odc-20161031.xsd#AccumulatedOtherComprehensiveIncomeNarrativeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/AccumulatedOtherComprehensiveIncomeNotes" xlink:href="odc-20161031.xsd#AccumulatedOtherComprehensiveIncomeNotes" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/AccumulatedOtherComprehensiveIncomeTables" xlink:href="odc-20161031.xsd#AccumulatedOtherComprehensiveIncomeTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/BasisOfStatementPresentation" xlink:href="odc-20161031.xsd#BasisOfStatementPresentation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/BasisOfStatementPresentationLevel2Policies" xlink:href="odc-20161031.xsd#BasisOfStatementPresentationLevel2Policies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/CondensedConsolidatedBalanceSheetParenthetical" xlink:href="odc-20161031.xsd#CondensedConsolidatedBalanceSheetParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/CondensedConsolidatedBalanceSheets" xlink:href="odc-20161031.xsd#CondensedConsolidatedBalanceSheets" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/CondensedConsolidatedStatementsOfCashFlows" xlink:href="odc-20161031.xsd#CondensedConsolidatedStatementsOfCashFlows" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:href="odc-20161031.xsd#CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/CondensedConsolidatedStatementsOfIncomeAndRetainedEarnings" xlink:href="odc-20161031.xsd#CondensedConsolidatedStatementsOfIncomeAndRetainedEarnings" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/DocumentAndEntityInformation" xlink:href="odc-20161031.xsd#DocumentAndEntityInformation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/FairValueMeasurements" xlink:href="odc-20161031.xsd#FairValueMeasurements" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/FairValueMeasurementsFairValueMeasurementsPolicies" xlink:href="odc-20161031.xsd#FairValueMeasurementsFairValueMeasurementsPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/FairValueMeasurementsNarrativeDetails" xlink:href="odc-20161031.xsd#FairValueMeasurementsNarrativeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/GoodwillAndOtherIntangiblesDetails" xlink:href="odc-20161031.xsd#GoodwillAndOtherIntangiblesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/GoodwillAndOtherIntangiblesNarrativeDetails" xlink:href="odc-20161031.xsd#GoodwillAndOtherIntangiblesNarrativeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/GoodwillAndOtherIntangiblesNotes" xlink:href="odc-20161031.xsd#GoodwillAndOtherIntangiblesNotes" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/GoodwillAndOtherIntangiblesTables" xlink:href="odc-20161031.xsd#GoodwillAndOtherIntangiblesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/Inventories" xlink:href="odc-20161031.xsd#Inventories" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/InventoriesDetails" xlink:href="odc-20161031.xsd#InventoriesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/InventoriesLevel2Policies" xlink:href="odc-20161031.xsd#InventoriesLevel2Policies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/InventoriesLevel3Tables" xlink:href="odc-20161031.xsd#InventoriesLevel3Tables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/InventoriesNarrativeDetails" xlink:href="odc-20161031.xsd#InventoriesNarrativeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/NewAccountingPronouncements" xlink:href="odc-20161031.xsd#NewAccountingPronouncements" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/NewAccountingPronouncementsNarrativeDetails" xlink:href="odc-20161031.xsd#NewAccountingPronouncementsNarrativeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/OperatingSegments" xlink:href="odc-20161031.xsd#OperatingSegments" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/OperatingSegmentsDetails" xlink:href="odc-20161031.xsd#OperatingSegmentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/OperatingSegmentsLevel2Policies" xlink:href="odc-20161031.xsd#OperatingSegmentsLevel2Policies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/OperatingSegmentsNarrativeDetails" xlink:href="odc-20161031.xsd#OperatingSegmentsNarrativeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/OperatingSegmentsTables" xlink:href="odc-20161031.xsd#OperatingSegmentsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/PensionAndOtherPostretirementBenefits" xlink:href="odc-20161031.xsd#PensionAndOtherPostretirementBenefits" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/PensionAndOtherPostretirementBenefitsAssumptionsDetails" xlink:href="odc-20161031.xsd#PensionAndOtherPostretirementBenefitsAssumptionsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/PensionAndOtherPostretirementBenefitsDetails" xlink:href="odc-20161031.xsd#PensionAndOtherPostretirementBenefitsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/PensionAndOtherPostretirementBenefitsNarrativeDetails" xlink:href="odc-20161031.xsd#PensionAndOtherPostretirementBenefitsNarrativeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/PensionAndOtherPostretirementBenefitsTables" xlink:href="odc-20161031.xsd#PensionAndOtherPostretirementBenefitsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/StockBasedCompensation" xlink:href="odc-20161031.xsd#StockBasedCompensation" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/StockBasedCompensationLevel2Policies" xlink:href="odc-20161031.xsd#StockBasedCompensationLevel2Policies" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/StockBasedCompensationNarrativeDetails" xlink:href="odc-20161031.xsd#StockBasedCompensationNarrativeDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/StockBasedCompensationStockOptionDetails" xlink:href="odc-20161031.xsd#StockBasedCompensationStockOptionDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/StockBasedCompensationSummaryOfRestrictedStockTransactionsDetails" xlink:href="odc-20161031.xsd#StockBasedCompensationSummaryOfRestrictedStockTransactionsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://www.oildri.com/role/StockBasedCompensationTables" xlink:href="odc-20161031.xsd#StockBasedCompensationTables" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" xlink:type="simple" />
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" xlink:type="simple" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/AccumulatedOtherComprehensiveIncomeDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_F22726A9D3DB235E205A8860B72A0644" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_7E07C41A26F0115CB5FF8860B72A00A5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_F22726A9D3DB235E205A8860B72A0644" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_7E07C41A26F0115CB5FF8860B72A00A5" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_D6A14A731D2F8D0F97F78860B72AA7FE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_7E07C41A26F0115CB5FF8860B72A00A5" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_D6A14A731D2F8D0F97F78860B72AA7FE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_9140A6E6C212CD0B7AE88860B72A7FC7_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_D6A14A731D2F8D0F97F78860B72AA7FE" xlink:to="loc_us-gaap_EquityComponentDomain_9140A6E6C212CD0B7AE88860B72A7FC7_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_9140A6E6C212CD0B7AE88860B72A7FC7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_D6A14A731D2F8D0F97F78860B72AA7FE" xlink:to="loc_us-gaap_EquityComponentDomain_9140A6E6C212CD0B7AE88860B72A7FC7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_7B34FC9A458D1AF754728860B72A87B9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_9140A6E6C212CD0B7AE88860B72A7FC7" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_7B34FC9A458D1AF754728860B72A87B9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_25B9A4DFC90BEFF0129D8860B72A96E1" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_9140A6E6C212CD0B7AE88860B72A7FC7" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_25B9A4DFC90BEFF0129D8860B72A96E1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_24335F9A8FFCEB5C679F8860B72ABF5F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_F22726A9D3DB235E205A8860B72A0644" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_24335F9A8FFCEB5C679F8860B72ABF5F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_9AD16716F8CD7AD487C18860B72A9BAA" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_F22726A9D3DB235E205A8860B72A0644" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_9AD16716F8CD7AD487C18860B72A9BAA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_47867AAFF1719446C2098860B72A77A1" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_F22726A9D3DB235E205A8860B72A0644" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_47867AAFF1719446C2098860B72A77A1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_6F2C285F8D31C2BAF85E8860B72A61C9" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_F22726A9D3DB235E205A8860B72A0644" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_6F2C285F8D31C2BAF85E8860B72A61C9" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/AccumulatedOtherComprehensiveIncomeNarrativeDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_89BFFE83341CB40B05A4C5018CE24D75" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_BD8AB5FB183855950FF6C5018CE12879" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_89BFFE83341CB40B05A4C5018CE24D75" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_BD8AB5FB183855950FF6C5018CE12879" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_2E50A322CC3D337BFA14C5018CE2AA06" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_BD8AB5FB183855950FF6C5018CE12879" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_2E50A322CC3D337BFA14C5018CE2AA06" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_B78EF2179E02909F1019C5018CE27A81_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_2E50A322CC3D337BFA14C5018CE2AA06" xlink:to="loc_us-gaap_EquityComponentDomain_B78EF2179E02909F1019C5018CE27A81_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_B78EF2179E02909F1019C5018CE27A81" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_2E50A322CC3D337BFA14C5018CE2AA06" xlink:to="loc_us-gaap_EquityComponentDomain_B78EF2179E02909F1019C5018CE27A81" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax_4954050699D289DD4DA3C5018CE27082" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_89BFFE83341CB40B05A4C5018CE24D75" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax_4954050699D289DD4DA3C5018CE27082" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/AccumulatedOtherComprehensiveIncomeNotes" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/AccumulatedOtherComprehensiveIncomeTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/BasisOfStatementPresentation" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/BasisOfStatementPresentationLevel2Policies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/CondensedConsolidatedBalanceSheetParenthetical" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_7F734A5352966E57D57CB7AE275DB1A8" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_CFC57030F37675CC84C8B7AE274D47AB" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_7F734A5352966E57D57CB7AE275DB1A8" xlink:to="loc_us-gaap_StatementTable_CFC57030F37675CC84C8B7AE274D47AB" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_47C0BB089EDDB8CED50FB7AE274D6EB3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_CFC57030F37675CC84C8B7AE274D47AB" xlink:to="loc_us-gaap_StatementClassOfStockAxis_47C0BB089EDDB8CED50FB7AE274D6EB3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_80103DFD605405BD8276B7AE275D59F6_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_47C0BB089EDDB8CED50FB7AE274D6EB3" xlink:to="loc_us-gaap_ClassOfStockDomain_80103DFD605405BD8276B7AE275D59F6_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_80103DFD605405BD8276B7AE275D59F6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_47C0BB089EDDB8CED50FB7AE274D6EB3" xlink:to="loc_us-gaap_ClassOfStockDomain_80103DFD605405BD8276B7AE275D59F6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_419A7922CFEEFD783E95B7AE275DF776" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_80103DFD605405BD8276B7AE275D59F6" xlink:to="loc_us-gaap_CommonStockMember_419A7922CFEEFD783E95B7AE275DF776" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonClassBMember" xlink:label="loc_us-gaap_CommonClassBMember_5DEF991A70408356039EB7AE275D9EBB" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_80103DFD605405BD8276B7AE275D59F6" xlink:to="loc_us-gaap_CommonClassBMember_5DEF991A70408356039EB7AE275D9EBB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_41D399A0C3AE57647A6CB7AE275D6432" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7F734A5352966E57D57CB7AE275DB1A8" xlink:to="loc_us-gaap_AssetsCurrentAbstract_41D399A0C3AE57647A6CB7AE275D6432" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_BA22BFC8822EA8B7FBF3B7AE275D7D6E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_41D399A0C3AE57647A6CB7AE275D6432" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_BA22BFC8822EA8B7FBF3B7AE275D7D6E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherAssetsNoncurrentAbstract" xlink:label="loc_us-gaap_OtherAssetsNoncurrentAbstract_FC6D09714F968CC7E2FFB7AE275D72DD" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7F734A5352966E57D57CB7AE275DB1A8" xlink:to="loc_us-gaap_OtherAssetsNoncurrentAbstract_FC6D09714F968CC7E2FFB7AE275D72DD" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_TrademarksandpatentsaccumulatedAmortization" xlink:label="loc_odc_TrademarksandpatentsaccumulatedAmortization_C6D724DC263F810FF42AB7AE275D6971" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_FC6D09714F968CC7E2FFB7AE275D72DD" xlink:to="loc_odc_TrademarksandpatentsaccumulatedAmortization_C6D724DC263F810FF42AB7AE275D6971" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_Customerlistaccumulatedamortization" xlink:label="loc_odc_Customerlistaccumulatedamortization_7B3B381AABA4333720B8B7AE275DBD12" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_FC6D09714F968CC7E2FFB7AE275D72DD" xlink:to="loc_odc_Customerlistaccumulatedamortization_7B3B381AABA4333720B8B7AE275DBD12" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract_A3A46144EECFC919CC7FB7AE275D46A9" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7F734A5352966E57D57CB7AE275DB1A8" xlink:to="loc_us-gaap_LiabilitiesNoncurrentAbstract_A3A46144EECFC919CC7FB7AE275D46A9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredFinanceCostsNoncurrentNet" xlink:label="loc_us-gaap_DeferredFinanceCostsNoncurrentNet_F9D3FCB34D18EA78A5E3B7AE275DD869" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_A3A46144EECFC919CC7FB7AE275D46A9" xlink:to="loc_us-gaap_DeferredFinanceCostsNoncurrentNet_F9D3FCB34D18EA78A5E3B7AE275DD869" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_5891289ED0D854878600B7AE275D240F" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7F734A5352966E57D57CB7AE275DB1A8" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_5891289ED0D854878600B7AE275D240F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_D0A54EBC2D66D8998031B7AE275DDB1F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_5891289ED0D854878600B7AE275D240F" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_D0A54EBC2D66D8998031B7AE275DDB1F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_4392EFED4749B4FDD53AB7AE275D373D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_5891289ED0D854878600B7AE275D240F" xlink:to="loc_us-gaap_CommonStockSharesIssued_4392EFED4749B4FDD53AB7AE275D373D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_TreasuryStockShares" xlink:label="loc_us-gaap_TreasuryStockShares_CB07C3E4E7EAB5CF3921B7AE275DA1FE" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_5891289ED0D854878600B7AE275D240F" xlink:to="loc_us-gaap_TreasuryStockShares_CB07C3E4E7EAB5CF3921B7AE275DA1FE" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_2E42F63E49B5119F1BCBBADD72EE8559" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_1BA6C259E28B93266830BADD72EE7A03" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_2E42F63E49B5119F1BCBBADD72EE8559" xlink:to="loc_us-gaap_StatementTable_1BA6C259E28B93266830BADD72EE7A03" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_54DEA2D31EC6F2B1DF77BADD72EEA826" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_1BA6C259E28B93266830BADD72EE7A03" xlink:to="loc_us-gaap_StatementClassOfStockAxis_54DEA2D31EC6F2B1DF77BADD72EEA826" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_9476AE221E967275F5A1BADD72EE0D67_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_54DEA2D31EC6F2B1DF77BADD72EEA826" xlink:to="loc_us-gaap_ClassOfStockDomain_9476AE221E967275F5A1BADD72EE0D67_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_9476AE221E967275F5A1BADD72EE0D67" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_54DEA2D31EC6F2B1DF77BADD72EEA826" xlink:to="loc_us-gaap_ClassOfStockDomain_9476AE221E967275F5A1BADD72EE0D67" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_B379632B19A396A06D8ABADD72EE8F08" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_9476AE221E967275F5A1BADD72EE0D67" xlink:to="loc_us-gaap_CommonStockMember_B379632B19A396A06D8ABADD72EE8F08" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonClassBMember" xlink:label="loc_us-gaap_CommonClassBMember_864C7A4653069A277EA9BADD72EE7F4C" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_9476AE221E967275F5A1BADD72EE0D67" xlink:to="loc_us-gaap_CommonClassBMember_864C7A4653069A277EA9BADD72EE7F4C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_29BF65B43343C721AF9EBADD72EE0E8C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2E42F63E49B5119F1BCBBADD72EE8559" xlink:to="loc_us-gaap_AssetsAbstract_29BF65B43343C721AF9EBADD72EE0E8C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_21CE3B629BE97BF122D0BADD72EEDA74" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_29BF65B43343C721AF9EBADD72EE0E8C" xlink:to="loc_us-gaap_AssetsCurrentAbstract_21CE3B629BE97BF122D0BADD72EEDA74" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_5F5A4F2A74DDD202F629BADD72EE0CE5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_21CE3B629BE97BF122D0BADD72EEDA74" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_5F5A4F2A74DDD202F629BADD72EE0CE5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShortTermInvestments" xlink:label="loc_us-gaap_ShortTermInvestments_A069981A0401F5E0FD93BADD72EEFFBC" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_21CE3B629BE97BF122D0BADD72EEDA74" xlink:to="loc_us-gaap_ShortTermInvestments_A069981A0401F5E0FD93BADD72EEFFBC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ReceivablesNetCurrent" xlink:label="loc_us-gaap_ReceivablesNetCurrent_FBD7A69F4EF7520C7F7DBADD72EEC6AB" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_21CE3B629BE97BF122D0BADD72EEDA74" xlink:to="loc_us-gaap_ReceivablesNetCurrent_FBD7A69F4EF7520C7F7DBADD72EEC6AB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_EC2D720B883F93BFB297BADD72EE40EF" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_21CE3B629BE97BF122D0BADD72EEDA74" xlink:to="loc_us-gaap_InventoryNet_EC2D720B883F93BFB297BADD72EE40EF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredTaxAssetsNetCurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsNetCurrent_612D910AE35328BC4FDEBADD72EEBE8D" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_21CE3B629BE97BF122D0BADD72EEDA74" xlink:to="loc_us-gaap_DeferredTaxAssetsNetCurrent_612D910AE35328BC4FDEBADD72EEBE8D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherPrepaidExpenseCurrent" xlink:label="loc_us-gaap_OtherPrepaidExpenseCurrent_4CF15EAC78941C618794BADD72EE5611" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_21CE3B629BE97BF122D0BADD72EEDA74" xlink:to="loc_us-gaap_OtherPrepaidExpenseCurrent_4CF15EAC78941C618794BADD72EE5611" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PrepaidExpenseCurrent" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_D6B49B7973A70253C5ABBADD72EEE44C" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_21CE3B629BE97BF122D0BADD72EEDA74" xlink:to="loc_us-gaap_PrepaidExpenseCurrent_D6B49B7973A70253C5ABBADD72EEE44C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_8B0FFDE4464271693423BADD72EE2164" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_21CE3B629BE97BF122D0BADD72EEDA74" xlink:to="loc_us-gaap_AssetsCurrent_8B0FFDE4464271693423BADD72EE2164" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNetAbstract" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_81CCB015C34CBD367A89BADD72EEB6A7" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_29BF65B43343C721AF9EBADD72EE0E8C" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_81CCB015C34CBD367A89BADD72EEB6A7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_9B3AD53CDF919403A86ABADD72EEF43C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_81CCB015C34CBD367A89BADD72EEB6A7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_9B3AD53CDF919403A86ABADD72EEF43C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_96EFF9C11BA562C9BF37BADD72EE8F75" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_81CCB015C34CBD367A89BADD72EEB6A7" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_96EFF9C11BA562C9BF37BADD72EE8F75" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_8A623A6EEBD1B29603A1BADD72EE4A24" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_81CCB015C34CBD367A89BADD72EEB6A7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_8A623A6EEBD1B29603A1BADD72EE4A24" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherAssetsNoncurrentAbstract" xlink:label="loc_us-gaap_OtherAssetsNoncurrentAbstract_4F59A5D0A773EF00868FBADD72EE4228" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_29BF65B43343C721AF9EBADD72EE0E8C" xlink:to="loc_us-gaap_OtherAssetsNoncurrentAbstract_4F59A5D0A773EF00868FBADD72EE4228" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_DAAED2C72E36ADF7D728BADD72EE03F9" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_4F59A5D0A773EF00868FBADD72EE4228" xlink:to="loc_us-gaap_Goodwill_DAAED2C72E36ADF7D728BADD72EE03F9" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_Trademarksandpatentsnet" xlink:label="loc_odc_Trademarksandpatentsnet_E33954E791EC34148161BADD72EEA427" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_4F59A5D0A773EF00868FBADD72EE4228" xlink:to="loc_odc_Trademarksandpatentsnet_E33954E791EC34148161BADD72EEA427" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_Customerlistnet" xlink:label="loc_odc_Customerlistnet_DAA8048D6E4C8679DD11BADD72EE70FB" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_4F59A5D0A773EF00868FBADD72EE4228" xlink:to="loc_odc_Customerlistnet_DAA8048D6E4C8679DD11BADD72EE70FB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredTaxAssetsNetNoncurrent" xlink:label="loc_us-gaap_DeferredTaxAssetsNetNoncurrent_4B8FDE3768A7ADF60B23BADD72EEBB7F" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_4F59A5D0A773EF00868FBADD72EE4228" xlink:to="loc_us-gaap_DeferredTaxAssetsNetNoncurrent_4B8FDE3768A7ADF60B23BADD72EEBB7F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_4D29E04631171D64069FBADD72EEB1B9" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_4F59A5D0A773EF00868FBADD72EE4228" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_4D29E04631171D64069FBADD72EEB1B9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AssetsNoncurrent" xlink:label="loc_us-gaap_AssetsNoncurrent_ABB572A4F084BA392261BADD72EE3181" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_4F59A5D0A773EF00868FBADD72EE4228" xlink:to="loc_us-gaap_AssetsNoncurrent_ABB572A4F084BA392261BADD72EE3181" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_FFD18787E0854708169CBADD72EE3C76" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_29BF65B43343C721AF9EBADD72EE0E8C" xlink:to="loc_us-gaap_Assets_FFD18787E0854708169CBADD72EE3C76" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_F028592D465FC482F88ABADD72EE9128" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2E42F63E49B5119F1BCBBADD72EE8559" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_F028592D465FC482F88ABADD72EE9128" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_98E573773996A3C26EC0BADD72EE83C1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_F028592D465FC482F88ABADD72EE9128" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_98E573773996A3C26EC0BADD72EE83C1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SeniorNotesCurrent" xlink:label="loc_us-gaap_SeniorNotesCurrent_658B698467DE889A0B5ABADD72EE9CC6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_98E573773996A3C26EC0BADD72EE83C1" xlink:to="loc_us-gaap_SeniorNotesCurrent_658B698467DE889A0B5ABADD72EE9CC6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_926C53E8816282643888BADD72EE5226" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_98E573773996A3C26EC0BADD72EE83C1" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_926C53E8816282643888BADD72EE5226" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DividendsPayableCurrent" xlink:label="loc_us-gaap_DividendsPayableCurrent_28AD4AD3B7CC7E629F49BADD72EE8648" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_98E573773996A3C26EC0BADD72EE83C1" xlink:to="loc_us-gaap_DividendsPayableCurrent_28AD4AD3B7CC7E629F49BADD72EE8648" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccruedLiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_29D02907B368C26AB0F2BADD72EE6E1C" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_98E573773996A3C26EC0BADD72EE83C1" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_29D02907B368C26AB0F2BADD72EE6E1C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_24CD642059BCF1FA1470BADD72EE92D3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_29D02907B368C26AB0F2BADD72EE6E1C" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_24CD642059BCF1FA1470BADD72EE92D3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccruedMarketingCostsCurrent" xlink:label="loc_us-gaap_AccruedMarketingCostsCurrent_8D2947BAD2C5F74F7D84BADD72EE246A" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_29D02907B368C26AB0F2BADD72EE6E1C" xlink:to="loc_us-gaap_AccruedMarketingCostsCurrent_8D2947BAD2C5F74F7D84BADD72EE246A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_1E8880EEF5BB3D2C9407BADD72EE716E" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_29D02907B368C26AB0F2BADD72EE6E1C" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_1E8880EEF5BB3D2C9407BADD72EE716E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_5F8AE42ACD83CCB64A28BADD72EEAA8B" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_29D02907B368C26AB0F2BADD72EE6E1C" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_5F8AE42ACD83CCB64A28BADD72EEAA8B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_5D1EDFEB228E235CBCA7BADD72EECCFC" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_98E573773996A3C26EC0BADD72EE83C1" xlink:to="loc_us-gaap_LiabilitiesCurrent_5D1EDFEB228E235CBCA7BADD72EECCFC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract_895525142BD504A4BD5BBADD72EE5A05" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_F028592D465FC482F88ABADD72EE9128" xlink:to="loc_us-gaap_LiabilitiesNoncurrentAbstract_895525142BD504A4BD5BBADD72EE5A05" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SeniorLongTermNotes" xlink:label="loc_us-gaap_SeniorLongTermNotes_A3318C583882E17BB1A5BADD72EE5B2D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_895525142BD504A4BD5BBADD72EE5A05" xlink:to="loc_us-gaap_SeniorLongTermNotes_A3318C583882E17BB1A5BADD72EE5B2D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent" xlink:label="loc_us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_4C475056E08B65BE9695BADD72EE34E3" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_895525142BD504A4BD5BBADD72EE5A05" xlink:to="loc_us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_4C475056E08B65BE9695BADD72EE34E3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_6B9D581C5CE92A2F72B4BADD72EE166B" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_895525142BD504A4BD5BBADD72EE5A05" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_6B9D581C5CE92A2F72B4BADD72EE166B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_6433D803A78A00DCB84CBADD72EEC2F2" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_895525142BD504A4BD5BBADD72EE5A05" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_6433D803A78A00DCB84CBADD72EEC2F2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_BC46EA1D6492A509673ABADD72EEEDFD" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_895525142BD504A4BD5BBADD72EE5A05" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_BC46EA1D6492A509673ABADD72EEEDFD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_000803CC187F8A6A2C34BADD72EE3918" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_F028592D465FC482F88ABADD72EE9128" xlink:to="loc_us-gaap_Liabilities_000803CC187F8A6A2C34BADD72EE3918" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2A605E405A9BE19E7E7DBADD72EE6FDB" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_F028592D465FC482F88ABADD72EE9128" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2A605E405A9BE19E7E7DBADD72EE6FDB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_B926CB4F74D7268DB763BADD72EE1225" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2A605E405A9BE19E7E7DBADD72EE6FDB" xlink:to="loc_us-gaap_CommonStockValue_B926CB4F74D7268DB763BADD72EE1225" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_081325320D92D111C4E5BADD72EE3423" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2A605E405A9BE19E7E7DBADD72EE6FDB" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_081325320D92D111C4E5BADD72EE3423" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_B846144F83767293E9E2BADD72EE8FFC" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2A605E405A9BE19E7E7DBADD72EE6FDB" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_B846144F83767293E9E2BADD72EE8FFC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_CD68F691502175A9A336BADD72EE09B3" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2A605E405A9BE19E7E7DBADD72EE6FDB" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_CD68F691502175A9A336BADD72EE09B3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_824598D1412012A8BBA4BADD72EE7A36" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_CD68F691502175A9A336BADD72EE09B3" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax_824598D1412012A8BBA4BADD72EE7A36" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_235DD401E8572CD27968BADD72EE689B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_CD68F691502175A9A336BADD72EE09B3" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax_235DD401E8572CD27968BADD72EE689B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_9784890CFB513AB4206CBADD72EE6C0E" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstract_CD68F691502175A9A336BADD72EE09B3" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_9784890CFB513AB4206CBADD72EE6C0E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_TreasuryStockValue" xlink:label="loc_us-gaap_TreasuryStockValue_402F1765C67B9D2F86EEBADD72EE85E4" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2A605E405A9BE19E7E7DBADD72EE6FDB" xlink:to="loc_us-gaap_TreasuryStockValue_402F1765C67B9D2F86EEBADD72EE85E4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_373753E15276CD359203BADD72EEDDA3" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2A605E405A9BE19E7E7DBADD72EE6FDB" xlink:to="loc_us-gaap_StockholdersEquity_373753E15276CD359203BADD72EEDDA3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_A32EB1F7ABF15ED2ECCABADD72EE858B" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_F028592D465FC482F88ABADD72EE9128" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_A32EB1F7ABF15ED2ECCABADD72EE858B" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/CondensedConsolidatedStatementsOfCashFlows" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_A93050C236D159A13F29C9FBBA42075F" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_305A11DB09231A09550FC9FBBA42E2CA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_A93050C236D159A13F29C9FBBA42075F" xlink:to="loc_us-gaap_StatementTable_305A11DB09231A09550FC9FBBA42E2CA" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_501CD52AC2C8B05156DCC9FBBA4275D0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_305A11DB09231A09550FC9FBBA42E2CA" xlink:to="loc_us-gaap_StatementScenarioAxis_501CD52AC2C8B05156DCC9FBBA4275D0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_6209BE26661CD610835BC9FBBA42708E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementScenarioAxis_501CD52AC2C8B05156DCC9FBBA4275D0" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_6209BE26661CD610835BC9FBBA42708E_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_6209BE26661CD610835BC9FBBA42708E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementScenarioAxis_501CD52AC2C8B05156DCC9FBBA4275D0" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_6209BE26661CD610835BC9FBBA42708E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_7F27CBC6B0B8007A0773C9FBBA42C7D7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_A93050C236D159A13F29C9FBBA42075F" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_7F27CBC6B0B8007A0773C9FBBA42C7D7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_532FD034F326A0D44DBFC9FBBA42E07F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_7F27CBC6B0B8007A0773C9FBBA42C7D7" xlink:to="loc_us-gaap_ProfitLoss_532FD034F326A0D44DBFC9FBBA42E07F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1A4350798EF1315E5436C9FBBA42835B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_7F27CBC6B0B8007A0773C9FBBA42C7D7" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1A4350798EF1315E5436C9FBBA42835B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DepreciationAmortizationAndAccretionNet" xlink:label="loc_us-gaap_DepreciationAmortizationAndAccretionNet_62761D35BE6D3763D0BAC9FBBA42B5E3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1A4350798EF1315E5436C9FBBA42835B" xlink:to="loc_us-gaap_DepreciationAmortizationAndAccretionNet_62761D35BE6D3763D0BAC9FBBA42B5E3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments" xlink:label="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_3C9D7F81D2600547F877C9FBBA427E55" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1A4350798EF1315E5436C9FBBA42835B" xlink:to="loc_us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_3C9D7F81D2600547F877C9FBBA427E55" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_4CC6C9F0BBC8ED0B116AC9FBBA4265B9" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1A4350798EF1315E5436C9FBBA42835B" xlink:to="loc_us-gaap_ShareBasedCompensation_4CC6C9F0BBC8ED0B116AC9FBBA4265B9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities" xlink:label="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_5B1F5E7E7DE3AF886EEFC9FBBA428E05" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1A4350798EF1315E5436C9FBBA42835B" xlink:to="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities_5B1F5E7E7DE3AF886EEFC9FBBA428E05" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_BC6B2F599A539D78037EC9FBBA423D5E" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1A4350798EF1315E5436C9FBBA42835B" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_BC6B2F599A539D78037EC9FBBA423D5E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_7FB43344AA29F1D6C999C9FBBA42FA17" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1A4350798EF1315E5436C9FBBA42835B" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_7FB43344AA29F1D6C999C9FBBA42FA17" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_02E1146CF1950796C0ECC9FBBA4200BE" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1A4350798EF1315E5436C9FBBA42835B" xlink:to="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_02E1146CF1950796C0ECC9FBBA4200BE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingAssetsAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_84E29C0E498A3763AE78C9FBBA427CC1" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1A4350798EF1315E5436C9FBBA42835B" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_84E29C0E498A3763AE78C9FBBA427CC1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables_A3232FBE5CEA616F5EF3C9FBBA42A913" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_84E29C0E498A3763AE78C9FBBA427CC1" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables_A3232FBE5CEA616F5EF3C9FBBA42A913" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_4E70CD5B0CEEDE964566C9FBBA423A65" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_84E29C0E498A3763AE78C9FBBA427CC1" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_4E70CD5B0CEEDE964566C9FBBA423A65" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_EE105FE62A7EB9A4E92DC9FBBA42A09E" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_84E29C0E498A3763AE78C9FBBA427CC1" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_EE105FE62A7EB9A4E92DC9FBBA42A09E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_D8E8909AC8B67F90BD82C9FBBA42C002" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingAssetsAbstract_84E29C0E498A3763AE78C9FBBA427CC1" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_D8E8909AC8B67F90BD82C9FBBA42C002" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract_EEE89309545533C47215C9FBBA4262EE" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1A4350798EF1315E5436C9FBBA42835B" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract_EEE89309545533C47215C9FBBA4262EE" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_IncreaseDecreaseInAccountsPayableAndIncomeTaxesPayable" xlink:label="loc_odc_IncreaseDecreaseInAccountsPayableAndIncomeTaxesPayable_CED93D97490A1B6CAFEEC9FBBA423ADA" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract_EEE89309545533C47215C9FBBA4262EE" xlink:to="loc_odc_IncreaseDecreaseInAccountsPayableAndIncomeTaxesPayable_CED93D97490A1B6CAFEEC9FBBA423ADA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_76E2844A3BEFBCADFFE7C9FBBA4207FD" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract_EEE89309545533C47215C9FBBA4262EE" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_76E2844A3BEFBCADFFE7C9FBBA4207FD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredCompensation" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredCompensation_658E2DA9F866CB6AD2AFC9FBBA42050A" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract_EEE89309545533C47215C9FBBA4262EE" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredCompensation_658E2DA9F866CB6AD2AFC9FBBA42050A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations" xlink:label="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_BD6D0EB0BA1D204CF4A0C9FBBA42A52B" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract_EEE89309545533C47215C9FBBA4262EE" xlink:to="loc_us-gaap_IncreaseDecreaseInPensionAndPostretirementObligations_BD6D0EB0BA1D204CF4A0C9FBBA42A52B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_3C8DA95E49EB30C374D1C9FBBA429821" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract_EEE89309545533C47215C9FBBA4262EE" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_3C8DA95E49EB30C374D1C9FBBA429821" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_29E38CC39582FCFEDFB5C9FBBA422E4B" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1A4350798EF1315E5436C9FBBA42835B" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities_29E38CC39582FCFEDFB5C9FBBA422E4B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_770397F8FD73E29AAF8AC9FBBA42EEB5" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_7F27CBC6B0B8007A0773C9FBBA42C7D7" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_770397F8FD73E29AAF8AC9FBBA42EEB5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_0BE291847B66F16296DCC9FBBA4286E0" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_A93050C236D159A13F29C9FBBA42075F" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_0BE291847B66F16296DCC9FBBA4286E0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_7F07A12DE1EBE36E12D2C9FBBA42997F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_0BE291847B66F16296DCC9FBBA4286E0" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_7F07A12DE1EBE36E12D2C9FBBA42997F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_919130C48538C8121775C9FBBA42C58B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_0BE291847B66F16296DCC9FBBA4286E0" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_919130C48538C8121775C9FBBA42C58B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PaymentsToAcquireShortTermInvestments" xlink:label="loc_us-gaap_PaymentsToAcquireShortTermInvestments_254CC6B72B6BCACB793BC9FBBA424FB9" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_0BE291847B66F16296DCC9FBBA4286E0" xlink:to="loc_us-gaap_PaymentsToAcquireShortTermInvestments_254CC6B72B6BCACB793BC9FBBA424FB9" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromSaleOfShortTermInvestments" xlink:label="loc_us-gaap_ProceedsFromSaleOfShortTermInvestments_0B9333C01B89D38CC7A3C9FBBA42B20A" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_0BE291847B66F16296DCC9FBBA4286E0" xlink:to="loc_us-gaap_ProceedsFromSaleOfShortTermInvestments_0B9333C01B89D38CC7A3C9FBBA42B20A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_89401B47F19A3E330F64C9FBBA42D420" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_0BE291847B66F16296DCC9FBBA4286E0" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_89401B47F19A3E330F64C9FBBA42D420" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_D8C91F51554A745045E8C9FBBA42E090" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_A93050C236D159A13F29C9FBBA42075F" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_D8C91F51554A745045E8C9FBBA42E090" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RepaymentsOfSeniorDebt" xlink:label="loc_us-gaap_RepaymentsOfSeniorDebt_BE85973956D6D8E996F9C9FBBA425C51" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_D8C91F51554A745045E8C9FBBA42E090" xlink:to="loc_us-gaap_RepaymentsOfSeniorDebt_BE85973956D6D8E996F9C9FBBA425C51" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_802D9C1B3488E3478BCEC9FBBA421300" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_D8C91F51554A745045E8C9FBBA42E090" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_802D9C1B3488E3478BCEC9FBBA421300" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_9E11932C99486315BD92C9FBBA422E07" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_D8C91F51554A745045E8C9FBBA42E090" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_9E11932C99486315BD92C9FBBA422E07" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_1A21FFD445D883B00AFEC9FBBA42A53C" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_D8C91F51554A745045E8C9FBBA42E090" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_1A21FFD445D883B00AFEC9FBBA42A53C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities" xlink:label="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_BDC2E6E727F8AA5433B2C9FBBA42918F" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_D8C91F51554A745045E8C9FBBA42E090" xlink:to="loc_us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_BDC2E6E727F8AA5433B2C9FBBA42918F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_67716E871A30BDC44DF9C9FBBA42DD04" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_D8C91F51554A745045E8C9FBBA42E090" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_67716E871A30BDC44DF9C9FBBA42DD04" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_36D1D1B6C37F422CD776C9FBBA424794" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_A93050C236D159A13F29C9FBBA42075F" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_36D1D1B6C37F422CD776C9FBBA424794" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_5B37F3D750C1369D875AC9FBBA42FEBA" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_A93050C236D159A13F29C9FBBA42075F" xlink:to="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_5B37F3D750C1369D875AC9FBBA42FEBA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_8FDF8DC87CDEB0F2B736C9FBBA423390" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_A93050C236D159A13F29C9FBBA42075F" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_8FDF8DC87CDEB0F2B736C9FBBA423390" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:label="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_4AEB8AE1B29C4F189A66C9FBBA42EA4C" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_A93050C236D159A13F29C9FBBA42075F" xlink:to="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_4AEB8AE1B29C4F189A66C9FBBA42EA4C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CapitalExpendituresIncurredButNotYetPaid" xlink:label="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_CBE611941CC44F9E4922C9FBBA420F7D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_4AEB8AE1B29C4F189A66C9FBBA42EA4C" xlink:to="loc_us-gaap_CapitalExpendituresIncurredButNotYetPaid_CBE611941CC44F9E4922C9FBBA420F7D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:label="loc_us-gaap_DividendsPayableCurrentAndNoncurrent_41DEA8071CB8216D0BBAC9FBBA42C920" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_4AEB8AE1B29C4F189A66C9FBBA42EA4C" xlink:to="loc_us-gaap_DividendsPayableCurrentAndNoncurrent_41DEA8071CB8216D0BBAC9FBBA42C920" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_474B2052C9EBB570173187B265DD1484" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_F79F109A8EB6AF34440687B265DD1420" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_474B2052C9EBB570173187B265DD1484" xlink:to="loc_us-gaap_StatementTable_F79F109A8EB6AF34440687B265DD1420" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_FA96379F7059126A886887B265DD424C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_F79F109A8EB6AF34440687B265DD1420" xlink:to="loc_us-gaap_StatementScenarioAxis_FA96379F7059126A886887B265DD424C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_120D29EEBD45A61ACA0787B265DDF557_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementScenarioAxis_FA96379F7059126A886887B265DD424C" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_120D29EEBD45A61ACA0787B265DDF557_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_120D29EEBD45A61ACA0787B265DDF557" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementScenarioAxis_FA96379F7059126A886887B265DD424C" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_120D29EEBD45A61ACA0787B265DDF557" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_7B8A5F2DAD1E2F5B692387B265DD819A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_474B2052C9EBB570173187B265DD1484" xlink:to="loc_us-gaap_ProfitLoss_7B8A5F2DAD1E2F5B692387B265DD819A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_16D6B59F95EC9DE5729B87B265DD3EEE" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_474B2052C9EBB570173187B265DD1484" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_16D6B59F95EC9DE5729B87B265DD3EEE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_A01998B63B7BDFB4A6EA87B265DDBCBE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_16D6B59F95EC9DE5729B87B265DD3EEE" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_A01998B63B7BDFB4A6EA87B265DDBCBE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_6FC325A5D8E9B7B85C8387B265DD0E3D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_16D6B59F95EC9DE5729B87B265DD3EEE" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_6FC325A5D8E9B7B85C8387B265DD0E3D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_7EF13BF9466038CFDEED87B265DDAC98" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_16D6B59F95EC9DE5729B87B265DD3EEE" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_7EF13BF9466038CFDEED87B265DDAC98" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_C22C123E90D4470EB6D387B265DD6A35" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_474B2052C9EBB570173187B265DD1484" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_C22C123E90D4470EB6D387B265DD6A35" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/CondensedConsolidatedStatementsOfIncomeAndRetainedEarnings" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_D15979410FC3C5C7BDEEBADE0D4AF783" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:to="loc_us-gaap_StatementTable_D15979410FC3C5C7BDEEBADE0D4AF783" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_D0C2C1F2185BA6DA8AAFBADE0D4A3573" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_D15979410FC3C5C7BDEEBADE0D4AF783" xlink:to="loc_us-gaap_StatementClassOfStockAxis_D0C2C1F2185BA6DA8AAFBADE0D4A3573" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_4BA56F3A4497F75904F0BADE0D4A1A40_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_D0C2C1F2185BA6DA8AAFBADE0D4A3573" xlink:to="loc_us-gaap_ClassOfStockDomain_4BA56F3A4497F75904F0BADE0D4A1A40_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_4BA56F3A4497F75904F0BADE0D4A1A40" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_D0C2C1F2185BA6DA8AAFBADE0D4A3573" xlink:to="loc_us-gaap_ClassOfStockDomain_4BA56F3A4497F75904F0BADE0D4A1A40" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_9B65E6B65E57F27988AFBADE0D4ACB0B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_4BA56F3A4497F75904F0BADE0D4A1A40" xlink:to="loc_us-gaap_CommonStockMember_9B65E6B65E57F27988AFBADE0D4ACB0B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonClassBMember" xlink:label="loc_us-gaap_CommonClassBMember_35DA6A426ABEA3755747BADE0D4A4DA4" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_4BA56F3A4497F75904F0BADE0D4A1A40" xlink:to="loc_us-gaap_CommonClassBMember_35DA6A426ABEA3755747BADE0D4A4DA4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SalesRevenueGoodsNet" xlink:label="loc_us-gaap_SalesRevenueGoodsNet_E8E605EE11D811B68CA2BADE0D4A579D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:to="loc_us-gaap_SalesRevenueGoodsNet_E8E605EE11D811B68CA2BADE0D4A579D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CostOfGoodsSold" xlink:label="loc_us-gaap_CostOfGoodsSold_8941F04AD11DB5BC6B2EBADE0D4A61F1" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:to="loc_us-gaap_CostOfGoodsSold_8941F04AD11DB5BC6B2EBADE0D4A61F1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaap_GrossProfit_14B721533574B344AEEEBADE0D4A8916" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:to="loc_us-gaap_GrossProfit_14B721533574B344AEEEBADE0D4A8916" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_7FAC875B2BF133AB55D2BADE0D5A0248" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_7FAC875B2BF133AB55D2BADE0D5A0248" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_F91220C1AD0D0F9A591CBADE0D5AF6E6" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:to="loc_us-gaap_OperatingIncomeLoss_F91220C1AD0D0F9A591CBADE0D5AF6E6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_953322D8D01D85C1DACBBADE0D5A284D" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_953322D8D01D85C1DACBBADE0D5A284D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InterestExpenseDebt" xlink:label="loc_us-gaap_InterestExpenseDebt_80DA61C50A62442AC54FBADE0D5AF50B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_953322D8D01D85C1DACBBADE0D5A284D" xlink:to="loc_us-gaap_InterestExpenseDebt_80DA61C50A62442AC54FBADE0D5AF50B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InvestmentIncomeInterest" xlink:label="loc_us-gaap_InvestmentIncomeInterest_97624A81A6C32616ED6BBADE0D5A7296" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_953322D8D01D85C1DACBBADE0D5A284D" xlink:to="loc_us-gaap_InvestmentIncomeInterest_97624A81A6C32616ED6BBADE0D5A7296" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_FA88FBF883758F763FC7BADE0D5ACE68" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_953322D8D01D85C1DACBBADE0D5A284D" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_FA88FBF883758F763FC7BADE0D5ACE68" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_2FBD5AA938F0C8893401BADE0D5A2132" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_953322D8D01D85C1DACBBADE0D5A284D" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_2FBD5AA938F0C8893401BADE0D5A2132" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5CE52AC9B78CDB6D911FBADE0D5A890F" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_5CE52AC9B78CDB6D911FBADE0D5A890F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_C158E732608FB21099F3BADE0D5A9009" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_C158E732608FB21099F3BADE0D5A9009" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_B3B0529192ED7BD3AB6BBADE0D5AF379" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:to="loc_us-gaap_ProfitLoss_B3B0529192ED7BD3AB6BBADE0D5AF379" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficitAbstract" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficitAbstract_19AC61B61B8D02D66E90BADE0D5A1097" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficitAbstract_19AC61B61B8D02D66E90BADE0D5A1097" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01A501F45E625813018CBADE0D5ADD64" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetainedEarningsAccumulatedDeficitAbstract_19AC61B61B8D02D66E90BADE0D5A1097" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01A501F45E625813018CBADE0D5ADD64" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_CashDividendsDeclaredAndTreasuryStockIssuances" xlink:label="loc_odc_CashDividendsDeclaredAndTreasuryStockIssuances_E2C024B40E1C2A006F9FBADE0D5AB789" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetainedEarningsAccumulatedDeficitAbstract_19AC61B61B8D02D66E90BADE0D5A1097" xlink:to="loc_odc_CashDividendsDeclaredAndTreasuryStockIssuances_E2C024B40E1C2A006F9FBADE0D5AB789" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_940BE1C7FAC3A210B148BADE0D5AE277" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:to="loc_us-gaap_EarningsPerShareAbstract_940BE1C7FAC3A210B148BADE0D5AE277" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_803359CF0CD24D356D58BADE0D5AC564" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_940BE1C7FAC3A210B148BADE0D5AE277" xlink:to="loc_us-gaap_EarningsPerShareBasic_803359CF0CD24D356D58BADE0D5AC564" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_69C0A37F264D06BA1C65BADE0D5A4CD0" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_940BE1C7FAC3A210B148BADE0D5AE277" xlink:to="loc_us-gaap_EarningsPerShareDiluted_69C0A37F264D06BA1C65BADE0D5A4CD0" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_WeightedAverageSharesOutstandingAbstract" xlink:label="loc_odc_WeightedAverageSharesOutstandingAbstract_F600ABE8F08363256682BADE0D5AA9B8" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:to="loc_odc_WeightedAverageSharesOutstandingAbstract_F600ABE8F08363256682BADE0D5AA9B8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_FFE9C3C9962A2BBFC96EBADE0D5A2274" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_odc_WeightedAverageSharesOutstandingAbstract_F600ABE8F08363256682BADE0D5AA9B8" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_FFE9C3C9962A2BBFC96EBADE0D5A2274" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_88EA5F4595BE5A418F86BADE0D5A3DE0" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_odc_WeightedAverageSharesOutstandingAbstract_F600ABE8F08363256682BADE0D5AA9B8" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_88EA5F4595BE5A418F86BADE0D5A3DE0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_3258944D943775F1B03FBADE0D5A587D" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_E00CDEBDCB28A7BC3638BADE0D4A7E29" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_3258944D943775F1B03FBADE0D5A587D" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/DocumentAndEntityInformation" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityInformationLineItems" xlink:label="loc_dei_EntityInformationLineItems_9AF97C296CB71AE7CA1BC5018D9B80E9" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntitiesTable" xlink:label="loc_dei_EntitiesTable_F7F003D7A7672F3D9546C5018D9B8F23" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_EntityInformationLineItems_9AF97C296CB71AE7CA1BC5018D9B80E9" xlink:to="loc_dei_EntitiesTable_F7F003D7A7672F3D9546C5018D9B8F23" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_CB8A18CAB2C372883AC4C5018D9B520C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_EntitiesTable_F7F003D7A7672F3D9546C5018D9B8F23" xlink:to="loc_us-gaap_StatementClassOfStockAxis_CB8A18CAB2C372883AC4C5018D9B520C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_3B483B9FEF3D2108CB0DC5018D9B8CDF_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_CB8A18CAB2C372883AC4C5018D9B520C" xlink:to="loc_us-gaap_ClassOfStockDomain_3B483B9FEF3D2108CB0DC5018D9B8CDF_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_3B483B9FEF3D2108CB0DC5018D9B8CDF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_CB8A18CAB2C372883AC4C5018D9B520C" xlink:to="loc_us-gaap_ClassOfStockDomain_3B483B9FEF3D2108CB0DC5018D9B8CDF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_6232267EAA80A51B9D90C5018D9BE3FE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_3B483B9FEF3D2108CB0DC5018D9B8CDF" xlink:to="loc_us-gaap_CommonStockMember_6232267EAA80A51B9D90C5018D9BE3FE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CommonClassBMember" xlink:label="loc_us-gaap_CommonClassBMember_B2347E030E4A8B3E2E6CC5018D9BD965" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_3B483B9FEF3D2108CB0DC5018D9B8CDF" xlink:to="loc_us-gaap_CommonClassBMember_B2347E030E4A8B3E2E6CC5018D9BD965" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_1F51B8D1151966533AD4C5018D9BE7D7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_9AF97C296CB71AE7CA1BC5018D9B80E9" xlink:to="loc_dei_EntityRegistrantName_1F51B8D1151966533AD4C5018D9BE7D7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_E446522D4651E81B8EC5C5018D9BD45E" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_9AF97C296CB71AE7CA1BC5018D9B80E9" xlink:to="loc_dei_EntityCentralIndexKey_E446522D4651E81B8EC5C5018D9BD45E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_A7597D5F5B55A1DC5DE9C5018D9C6C34" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_9AF97C296CB71AE7CA1BC5018D9B80E9" xlink:to="loc_dei_CurrentFiscalYearEndDate_A7597D5F5B55A1DC5DE9C5018D9C6C34" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_965A3E917BA69D19404BC5018D9C45B7" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_9AF97C296CB71AE7CA1BC5018D9B80E9" xlink:to="loc_dei_EntityFilerCategory_965A3E917BA69D19404BC5018D9C45B7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_490B6590C12783AE6552C5018D9C0736" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_9AF97C296CB71AE7CA1BC5018D9B80E9" xlink:to="loc_dei_DocumentType_490B6590C12783AE6552C5018D9C0736" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_63ADD032C08EDB9DEDD3C5018D9C231C" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_9AF97C296CB71AE7CA1BC5018D9B80E9" xlink:to="loc_dei_DocumentPeriodEndDate_63ADD032C08EDB9DEDD3C5018D9C231C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_5B9053ACBE61612EE7E6C5018D9C9898" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_9AF97C296CB71AE7CA1BC5018D9B80E9" xlink:to="loc_dei_DocumentFiscalYearFocus_5B9053ACBE61612EE7E6C5018D9C9898" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_7EB872347777B333E2B4C5018D9C7755" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_9AF97C296CB71AE7CA1BC5018D9B80E9" xlink:to="loc_dei_DocumentFiscalPeriodFocus_7EB872347777B333E2B4C5018D9C7755" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_49BEEC4024DB7E557E1CC5018D9C8357" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_9AF97C296CB71AE7CA1BC5018D9B80E9" xlink:to="loc_dei_AmendmentFlag_49BEEC4024DB7E557E1CC5018D9C8357" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_41767F4957F846F932FCC5018D9C00C8" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityInformationLineItems_9AF97C296CB71AE7CA1BC5018D9B80E9" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_41767F4957F846F932FCC5018D9C00C8" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/FairValueMeasurements" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/FairValueMeasurementsFairValueMeasurementsPolicies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/FairValueMeasurementsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4E925E929AC822F1E43FC5018C807AC0" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_CFF49821587B6459A1B2C5018C800A21" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4E925E929AC822F1E43FC5018C807AC0" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_CFF49821587B6459A1B2C5018C800A21" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5AFAD3E79B97FAAB4F87C5018C805DF8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_CFF49821587B6459A1B2C5018C800A21" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5AFAD3E79B97FAAB4F87C5018C805DF8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_CF387C7FBABCE9A284CBC5018C80991A_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5AFAD3E79B97FAAB4F87C5018C805DF8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_CF387C7FBABCE9A284CBC5018C80991A_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_CF387C7FBABCE9A284CBC5018C80991A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5AFAD3E79B97FAAB4F87C5018C805DF8" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_CF387C7FBABCE9A284CBC5018C80991A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_C833B17DEB861180D8ECC5018C80ACC2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_CF387C7FBABCE9A284CBC5018C80991A" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_C833B17DEB861180D8ECC5018C80ACC2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_6ADF75DE796D2BD9BAB0C5018C805690" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_CF387C7FBABCE9A284CBC5018C80991A" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_6ADF75DE796D2BD9BAB0C5018C805690" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_CashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashEquivalentsAtCarryingValue_37F4D3A7504A2F63C3E1C5018C80D5D3" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4E925E929AC822F1E43FC5018C807AC0" xlink:to="loc_us-gaap_CashEquivalentsAtCarryingValue_37F4D3A7504A2F63C3E1C5018C80D5D3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:label="loc_us-gaap_LongTermDebtFairValue_D27FAAD421554E4C21CDC5018C80C1EC" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_4E925E929AC822F1E43FC5018C807AC0" xlink:to="loc_us-gaap_LongTermDebtFairValue_D27FAAD421554E4C21CDC5018C80C1EC" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/GoodwillAndOtherIntangiblesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_364B7A3E3A123A424E85885E721800D3" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_05E64422B7C721879B5C885E72175957" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_364B7A3E3A123A424E85885E721800D3" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_05E64422B7C721879B5C885E72175957" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_79A4DA60DBA1B183241D885E7217CC7A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_05E64422B7C721879B5C885E72175957" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_79A4DA60DBA1B183241D885E7217CC7A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3F550564D2848AFA9D77885E72186F2D_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_79A4DA60DBA1B183241D885E7217CC7A" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3F550564D2848AFA9D77885E72186F2D_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3F550564D2848AFA9D77885E72186F2D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_79A4DA60DBA1B183241D885E7217CC7A" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3F550564D2848AFA9D77885E72186F2D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_80ABB9A9489AE2A6D71E885E72181563" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_364B7A3E3A123A424E85885E721800D3" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_80ABB9A9489AE2A6D71E885E72181563" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_A915D700FA183B3C6671885E72186896" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_364B7A3E3A123A424E85885E721800D3" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_A915D700FA183B3C6671885E72186896" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_70676EC948FA3AEA31D7885E7218B4B3" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_364B7A3E3A123A424E85885E721800D3" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_70676EC948FA3AEA31D7885E7218B4B3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_FA41E7DC2579C80F35D3885E7218555E" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_364B7A3E3A123A424E85885E721800D3" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_FA41E7DC2579C80F35D3885E7218555E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_66C76FBD0C795399F832885E7218A462" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_364B7A3E3A123A424E85885E721800D3" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_66C76FBD0C795399F832885E7218A462" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/GoodwillAndOtherIntangiblesNarrativeDetails" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/GoodwillAndOtherIntangiblesNotes" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/GoodwillAndOtherIntangiblesTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/Inventories" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/InventoriesDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryLineItems" xlink:label="loc_us-gaap_InventoryLineItems_329AC08368458D71BBB4C5018D8C0BE5" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryCurrentTable" xlink:label="loc_us-gaap_InventoryCurrentTable_C4FA1BE233BF4A7E1F8CC5018D8CF25A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_InventoryLineItems_329AC08368458D71BBB4C5018D8C0BE5" xlink:to="loc_us-gaap_InventoryCurrentTable_C4FA1BE233BF4A7E1F8CC5018D8CF25A" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PublicUtilitiesInventoryAxis" xlink:label="loc_us-gaap_PublicUtilitiesInventoryAxis_07DC87C5D65231AFF826C5018D8C2AA0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InventoryCurrentTable_C4FA1BE233BF4A7E1F8CC5018D8CF25A" xlink:to="loc_us-gaap_PublicUtilitiesInventoryAxis_07DC87C5D65231AFF826C5018D8C2AA0" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PublicUtilitiesInventoryTypeDomain" xlink:label="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_50A96396347EE35285BCC5018D8C7AE5_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilitiesInventoryAxis_07DC87C5D65231AFF826C5018D8C2AA0" xlink:to="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_50A96396347EE35285BCC5018D8C7AE5_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PublicUtilitiesInventoryTypeDomain" xlink:label="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_50A96396347EE35285BCC5018D8C7AE5" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilitiesInventoryAxis_07DC87C5D65231AFF826C5018D8C2AA0" xlink:to="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_50A96396347EE35285BCC5018D8C7AE5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryFinishedGoods" xlink:label="loc_us-gaap_InventoryFinishedGoods_40482AB1EBFF38F350A0C5018D8C1896" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_329AC08368458D71BBB4C5018D8C0BE5" xlink:to="loc_us-gaap_InventoryFinishedGoods_40482AB1EBFF38F350A0C5018D8C1896" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_PackagingInventory" xlink:label="loc_odc_PackagingInventory_663D4E151A0836B0E4AEC5018D8C08B2" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_329AC08368458D71BBB4C5018D8C0BE5" xlink:to="loc_odc_PackagingInventory_663D4E151A0836B0E4AEC5018D8C08B2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherInventory" xlink:label="loc_us-gaap_OtherInventory_3E076AB8AA5E688497DEC5018D8CA855" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_329AC08368458D71BBB4C5018D8C0BE5" xlink:to="loc_us-gaap_OtherInventory_3E076AB8AA5E688497DEC5018D8CA855" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_E081D97ED0C0BF8C800FC5018D8D1F55" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_329AC08368458D71BBB4C5018D8C0BE5" xlink:to="loc_us-gaap_InventoryNet_E081D97ED0C0BF8C800FC5018D8D1F55" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/InventoriesLevel2Policies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/InventoriesLevel3Tables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/InventoriesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryLineItems" xlink:label="loc_us-gaap_InventoryLineItems_483C05F131781ACC5E53C5018D92C2EA" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryCurrentTable" xlink:label="loc_us-gaap_InventoryCurrentTable_9C88A9AB767C12A0E966C5018D9104E2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_InventoryLineItems_483C05F131781ACC5E53C5018D92C2EA" xlink:to="loc_us-gaap_InventoryCurrentTable_9C88A9AB767C12A0E966C5018D9104E2" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PublicUtilitiesInventoryAxis" xlink:label="loc_us-gaap_PublicUtilitiesInventoryAxis_EADEA7BDBE143AA5D273C5018D92787F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_InventoryCurrentTable_9C88A9AB767C12A0E966C5018D9104E2" xlink:to="loc_us-gaap_PublicUtilitiesInventoryAxis_EADEA7BDBE143AA5D273C5018D92787F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PublicUtilitiesInventoryTypeDomain" xlink:label="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_6F9E9C782CAB77B47869C5018D92CF8E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PublicUtilitiesInventoryAxis_EADEA7BDBE143AA5D273C5018D92787F" xlink:to="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_6F9E9C782CAB77B47869C5018D92CF8E_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PublicUtilitiesInventoryTypeDomain" xlink:label="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_6F9E9C782CAB77B47869C5018D92CF8E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PublicUtilitiesInventoryAxis_EADEA7BDBE143AA5D273C5018D92787F" xlink:to="loc_us-gaap_PublicUtilitiesInventoryTypeDomain_6F9E9C782CAB77B47869C5018D92CF8E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_InventoryValuationReserves" xlink:label="loc_us-gaap_InventoryValuationReserves_5BD5B9DAA82AD691CC3AC5018D920368" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_InventoryLineItems_483C05F131781ACC5E53C5018D92C2EA" xlink:to="loc_us-gaap_InventoryValuationReserves_5BD5B9DAA82AD691CC3AC5018D920368" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/NewAccountingPronouncements" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/NewAccountingPronouncementsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_42040BAA25250857EC19C9FBBA1308BC" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_5DC211218FE7BA0EF04FC9FBBA13E87C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_42040BAA25250857EC19C9FBBA1308BC" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_5DC211218FE7BA0EF04FC9FBBA13E87C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7A45157143902B9A2020C9FBBA136042" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_5DC211218FE7BA0EF04FC9FBBA13E87C" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7A45157143902B9A2020C9FBBA136042" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_566522E0F97006BE3486C9FBBA13F636_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7A45157143902B9A2020C9FBBA136042" xlink:to="loc_us-gaap_TypeOfAdoptionMember_566522E0F97006BE3486C9FBBA13F636_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_566522E0F97006BE3486C9FBBA13F636" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_7A45157143902B9A2020C9FBBA136042" xlink:to="loc_us-gaap_TypeOfAdoptionMember_566522E0F97006BE3486C9FBBA13F636" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_820FC351B48E1A01ACFFC9FBBA131F2E" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_5DC211218FE7BA0EF04FC9FBBA13E87C" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_820FC351B48E1A01ACFFC9FBBA131F2E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_43FD5AC50B465017DFFFC9FBBA13395D_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_820FC351B48E1A01ACFFC9FBBA131F2E" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_43FD5AC50B465017DFFFC9FBBA13395D_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_43FD5AC50B465017DFFFC9FBBA13395D" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_820FC351B48E1A01ACFFC9FBBA131F2E" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_43FD5AC50B465017DFFFC9FBBA13395D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_D51EEEB33197EF81677EC9FBBA138F51" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_5DC211218FE7BA0EF04FC9FBBA13E87C" xlink:to="loc_us-gaap_StatementScenarioAxis_D51EEEB33197EF81677EC9FBBA138F51" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_F594CA8340E45C252E09C9FBBA132FE2_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementScenarioAxis_D51EEEB33197EF81677EC9FBBA138F51" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_F594CA8340E45C252E09C9FBBA132FE2_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_F594CA8340E45C252E09C9FBBA132FE2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementScenarioAxis_D51EEEB33197EF81677EC9FBBA138F51" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_F594CA8340E45C252E09C9FBBA132FE2" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/OperatingSegments" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/OperatingSegmentsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_35E730DC2AC195EA498287B2659F4709" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_D792D4635ACDAB2CE0EC87B2659F0AB4" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_35E730DC2AC195EA498287B2659F4709" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_D792D4635ACDAB2CE0EC87B2659F0AB4" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_4C9FE0A5DA296C93469D87B2659F480B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_D792D4635ACDAB2CE0EC87B2659F0AB4" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_4C9FE0A5DA296C93469D87B2659F480B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_FFD1FDC17669A29AC99987B2659FB82E_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_4C9FE0A5DA296C93469D87B2659F480B" xlink:to="loc_us-gaap_SegmentDomain_FFD1FDC17669A29AC99987B2659FB82E_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_FFD1FDC17669A29AC99987B2659FB82E" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_4C9FE0A5DA296C93469D87B2659F480B" xlink:to="loc_us-gaap_SegmentDomain_FFD1FDC17669A29AC99987B2659FB82E" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_BusinesstoBusinessSegmentMember" xlink:label="loc_odc_BusinesstoBusinessSegmentMember_11B562DF16CBA3C007FA87B2659FBA85" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_FFD1FDC17669A29AC99987B2659FB82E" xlink:to="loc_odc_BusinesstoBusinessSegmentMember_11B562DF16CBA3C007FA87B2659FBA85" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_RetailAndWholesaleSegmentMember" xlink:label="loc_odc_RetailAndWholesaleSegmentMember_D328C0B1DD198D4CBDF487B2659FC636" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_FFD1FDC17669A29AC99987B2659FB82E" xlink:to="loc_odc_RetailAndWholesaleSegmentMember_D328C0B1DD198D4CBDF487B2659FC636" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_8208C92FF194013ABF1D87B2659FC721" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_FFD1FDC17669A29AC99987B2659FB82E" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_8208C92FF194013ABF1D87B2659FC721" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_E695958C00D9FB32B81187B2659FA0B6" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_35E730DC2AC195EA498287B2659F4709" xlink:to="loc_us-gaap_Assets_E695958C00D9FB32B81187B2659FA0B6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_1F47CE10A922DC96F25087B2659F63F4" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_35E730DC2AC195EA498287B2659F4709" xlink:to="loc_us-gaap_Revenues_1F47CE10A922DC96F25087B2659F63F4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SalesRevenueGoodsNet" xlink:label="loc_us-gaap_SalesRevenueGoodsNet_BF1C3D68479F307DA5B287B2659F72A3" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_35E730DC2AC195EA498287B2659F4709" xlink:to="loc_us-gaap_SalesRevenueGoodsNet_BF1C3D68479F307DA5B287B2659F72A3" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_SegmentReportingInformationOperatingIncomeForReportableSegment" xlink:label="loc_odc_SegmentReportingInformationOperatingIncomeForReportableSegment_684B204BCA1B7FEEE0ED87B2659FFCB7" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_35E730DC2AC195EA498287B2659F4709" xlink:to="loc_odc_SegmentReportingInformationOperatingIncomeForReportableSegment_684B204BCA1B7FEEE0ED87B2659FFCB7" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_CorporateExpenses" xlink:label="loc_odc_CorporateExpenses_AD67058EB147996050CB87B2659FF58D" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_35E730DC2AC195EA498287B2659F4709" xlink:to="loc_odc_CorporateExpenses_AD67058EB147996050CB87B2659FF58D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_A5178FF6FB4AE21E295887B2659F6018" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_35E730DC2AC195EA498287B2659F4709" xlink:to="loc_us-gaap_OperatingIncomeLoss_A5178FF6FB4AE21E295887B2659F6018" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_4C2E0F1F044BC4FD4DA187B2659F8F6B" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_35E730DC2AC195EA498287B2659F4709" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_4C2E0F1F044BC4FD4DA187B2659F8F6B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_481ED19A5024AE3997EA87B2659F3376" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_35E730DC2AC195EA498287B2659F4709" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_481ED19A5024AE3997EA87B2659F3376" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_4EE465B6A6114BF5F8C087B2659FD5D1" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_35E730DC2AC195EA498287B2659F4709" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_4EE465B6A6114BF5F8C087B2659FD5D1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_3869C77D54961423C31387B2659F6DD9" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_35E730DC2AC195EA498287B2659F4709" xlink:to="loc_us-gaap_ProfitLoss_3869C77D54961423C31387B2659F6DD9" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/OperatingSegmentsLevel2Policies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/OperatingSegmentsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_E7F48C4F8D0787DC9A1DC5018CCCA92E" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_AEFE14D07F473660F1E0C5018CCB17D0" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_E7F48C4F8D0787DC9A1DC5018CCCA92E" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_AEFE14D07F473660F1E0C5018CCB17D0" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_5B5C0C9CB718B2AA555DC5018CCCF02F" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_AEFE14D07F473660F1E0C5018CCB17D0" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_5B5C0C9CB718B2AA555DC5018CCCF02F" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_40837A25C786B3284A1CC5018CCC9AB2_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_5B5C0C9CB718B2AA555DC5018CCCF02F" xlink:to="loc_us-gaap_SegmentDomain_40837A25C786B3284A1CC5018CCC9AB2_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_40837A25C786B3284A1CC5018CCC9AB2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_5B5C0C9CB718B2AA555DC5018CCCF02F" xlink:to="loc_us-gaap_SegmentDomain_40837A25C786B3284A1CC5018CCC9AB2" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:label="loc_us-gaap_NumberOfReportableSegments_B0FF7815775D16F791D8C5018CCC015B" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_E7F48C4F8D0787DC9A1DC5018CCCA92E" xlink:to="loc_us-gaap_NumberOfReportableSegments_B0FF7815775D16F791D8C5018CCC015B" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/OperatingSegmentsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/PensionAndOtherPostretirementBenefits" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/PensionAndOtherPostretirementBenefitsAssumptionsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_8D7DB59BCF224D10BA04C5018D889D0C" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_6E933867C58ED95026F8C5018D87CCE8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_8D7DB59BCF224D10BA04C5018D889D0C" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_6E933867C58ED95026F8C5018D87CCE8" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis" xlink:label="loc_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_50B91F149E7B80D06339C5018D87ACFF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_6E933867C58ED95026F8C5018D87CCE8" xlink:to="loc_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_50B91F149E7B80D06339C5018D87ACFF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansDomain" xlink:label="loc_us-gaap_DefinedBenefitPlansDomain_86AA0F6B793BAF3A739EC5018D873391_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_50B91F149E7B80D06339C5018D87ACFF" xlink:to="loc_us-gaap_DefinedBenefitPlansDomain_86AA0F6B793BAF3A739EC5018D873391_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansDomain" xlink:label="loc_us-gaap_DefinedBenefitPlansDomain_86AA0F6B793BAF3A739EC5018D873391" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_50B91F149E7B80D06339C5018D87ACFF" xlink:to="loc_us-gaap_DefinedBenefitPlansDomain_86AA0F6B793BAF3A739EC5018D873391" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_F3E0A693B22780A2DF3BC5018D885B07" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansDomain_86AA0F6B793BAF3A739EC5018D873391" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_F3E0A693B22780A2DF3BC5018D885B07" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_3AA48C826808927D3D45C5018D88FF3D" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansDomain_86AA0F6B793BAF3A739EC5018D873391" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_3AA48C826808927D3D45C5018D88FF3D" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_51170E541B670F822669C5018D880762" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_8D7DB59BCF224D10BA04C5018D889D0C" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_51170E541B670F822669C5018D880762" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_FE0987517F3804BAF0CBC5018D88F58B" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_8D7DB59BCF224D10BA04C5018D889D0C" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_FE0987517F3804BAF0CBC5018D88F58B" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_D617D07227DD718423B4C5018D88944A" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_8D7DB59BCF224D10BA04C5018D889D0C" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_D617D07227DD718423B4C5018D88944A" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/PensionAndOtherPostretirementBenefitsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_5466BB9D61DB285137768860B759738F" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_8108BFF5E0DA4C95284F8860B7597CD2" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_5466BB9D61DB285137768860B759738F" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_8108BFF5E0DA4C95284F8860B7597CD2" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis" xlink:label="loc_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_0DC58E9B660F23DC89CD8860B7593D9A" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_8108BFF5E0DA4C95284F8860B7597CD2" xlink:to="loc_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_0DC58E9B660F23DC89CD8860B7593D9A" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansDomain" xlink:label="loc_us-gaap_DefinedBenefitPlansDomain_CEB2CF1FE9C96A5B8A778860B7592963_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_0DC58E9B660F23DC89CD8860B7593D9A" xlink:to="loc_us-gaap_DefinedBenefitPlansDomain_CEB2CF1FE9C96A5B8A778860B7592963_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansDomain" xlink:label="loc_us-gaap_DefinedBenefitPlansDomain_CEB2CF1FE9C96A5B8A778860B7592963" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_0DC58E9B660F23DC89CD8860B7593D9A" xlink:to="loc_us-gaap_DefinedBenefitPlansDomain_CEB2CF1FE9C96A5B8A778860B7592963" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_A6CF4DE64725FFA2D6808860B7595A55" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansDomain_CEB2CF1FE9C96A5B8A778860B7592963" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_A6CF4DE64725FFA2D6808860B7595A55" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_43B9DD10AF29B9E368E28860B75904D8" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansDomain_CEB2CF1FE9C96A5B8A778860B7592963" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_43B9DD10AF29B9E368E28860B75904D8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_449BC9E553F8976F433B8860B7598712" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_5466BB9D61DB285137768860B759738F" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_449BC9E553F8976F433B8860B7598712" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_7F8F7FB65A0DA288CC9E8860B759F0CF" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_5466BB9D61DB285137768860B759738F" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_7F8F7FB65A0DA288CC9E8860B759F0CF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_22C15FF07606178B331C8860B759B200" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_5466BB9D61DB285137768860B759738F" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_22C15FF07606178B331C8860B759B200" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_235525F855F0E9CABF108860B7593AB3" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_5466BB9D61DB285137768860B759738F" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_235525F855F0E9CABF108860B7593AB3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_E944DCFE020B352D7E438860B759254C" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_5466BB9D61DB285137768860B759738F" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_E944DCFE020B352D7E438860B759254C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_59E12655C4F19F696C518860B75953E3" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_5466BB9D61DB285137768860B759738F" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_59E12655C4F19F696C518860B75953E3" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/PensionAndOtherPostretirementBenefitsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_721A9CAA280929E616A9C5018D84F724" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_E9FA26F8114A654BC0C4C5018D835581" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_721A9CAA280929E616A9C5018D84F724" xlink:to="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_E9FA26F8114A654BC0C4C5018D835581" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis" xlink:label="loc_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_CB25283518D3A43327F9C5018D836E43" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresTable_E9FA26F8114A654BC0C4C5018D835581" xlink:to="loc_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_CB25283518D3A43327F9C5018D836E43" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansDomain" xlink:label="loc_us-gaap_DefinedBenefitPlansDomain_985E83DEEF0E6E16CEF8C5018D8346A8_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_CB25283518D3A43327F9C5018D836E43" xlink:to="loc_us-gaap_DefinedBenefitPlansDomain_985E83DEEF0E6E16CEF8C5018D8346A8_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansDomain" xlink:label="loc_us-gaap_DefinedBenefitPlansDomain_985E83DEEF0E6E16CEF8C5018D8346A8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis_CB25283518D3A43327F9C5018D836E43" xlink:to="loc_us-gaap_DefinedBenefitPlansDomain_985E83DEEF0E6E16CEF8C5018D8346A8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_F9FEEDE6EA474435FAE1C5018D83E0A7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansDomain_985E83DEEF0E6E16CEF8C5018D8346A8" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_F9FEEDE6EA474435FAE1C5018D83E0A7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_B304A42E637438D4888BC5018D846CEB" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansDomain_985E83DEEF0E6E16CEF8C5018D8346A8" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_B304A42E637438D4888BC5018D846CEB" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_0CA4F1EE93BD4C303E0CC5018D845154" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_721A9CAA280929E616A9C5018D84F724" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_0CA4F1EE93BD4C303E0CC5018D845154" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInCurrentFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInCurrentFiscalYear_8CE807CD7321CCCD8029C5018D846659" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_721A9CAA280929E616A9C5018D84F724" xlink:to="loc_us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInCurrentFiscalYear_8CE807CD7321CCCD8029C5018D846659" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear_1904928A3A2E279EF1FFC5018D84347C" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_721A9CAA280929E616A9C5018D84F724" xlink:to="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear_1904928A3A2E279EF1FFC5018D84347C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate" xlink:label="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate_768D50E8BC78371DA4EDC5018D84E8D3" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_721A9CAA280929E616A9C5018D84F724" xlink:to="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate_768D50E8BC78371DA4EDC5018D84E8D3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_DefinedBenefitPlanYearThatRateReachesUltimateTrendRate" xlink:label="loc_us-gaap_DefinedBenefitPlanYearThatRateReachesUltimateTrendRate_55294A5151219954B619C5018D84C3CB" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems_721A9CAA280929E616A9C5018D84F724" xlink:to="loc_us-gaap_DefinedBenefitPlanYearThatRateReachesUltimateTrendRate_55294A5151219954B619C5018D84C3CB" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/PensionAndOtherPostretirementBenefitsTables" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/StockBasedCompensation" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/StockBasedCompensationLevel2Policies" xlink:type="extended" />
  <link:definitionLink xlink:role="http://www.oildri.com/role/StockBasedCompensationNarrativeDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3F7B32FAED3936B63A1C8860B72A35E7" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3F7B32FAED3936B63A1C8860B72A35E7" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_8F8636F082202950A9FD8860B72A3CFF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3F7B32FAED3936B63A1C8860B72A35E7" xlink:to="loc_us-gaap_PlanNameAxis_8F8636F082202950A9FD8860B72A3CFF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_F62B36D17263B6FA73CF8860B72AC528_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_8F8636F082202950A9FD8860B72A3CFF" xlink:to="loc_us-gaap_PlanNameDomain_F62B36D17263B6FA73CF8860B72AC528_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_F62B36D17263B6FA73CF8860B72AC528" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_8F8636F082202950A9FD8860B72A3CFF" xlink:to="loc_us-gaap_PlanNameDomain_F62B36D17263B6FA73CF8860B72AC528" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_A2006PlanMember" xlink:label="loc_odc_A2006PlanMember_CF9FA0F7E0D3BFD1FFE48860B72A7649" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_F62B36D17263B6FA73CF8860B72AC528" xlink:to="loc_odc_A2006PlanMember_CF9FA0F7E0D3BFD1FFE48860B72A7649" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_DirectorStockOptionMember" xlink:label="loc_odc_DirectorStockOptionMember_0D27C63EF9B2E3EFFACD8860B72A0898" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_odc_A2006PlanMember_CF9FA0F7E0D3BFD1FFE48860B72A7649" xlink:to="loc_odc_DirectorStockOptionMember_0D27C63EF9B2E3EFFACD8860B72A0898" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_A2006PlanEmployeeStockOptionsMember" xlink:label="loc_odc_A2006PlanEmployeeStockOptionsMember_2E751EE7E20AB8C9FECC8860B72A7AED" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_odc_A2006PlanMember_CF9FA0F7E0D3BFD1FFE48860B72A7649" xlink:to="loc_odc_A2006PlanEmployeeStockOptionsMember_2E751EE7E20AB8C9FECC8860B72A7AED" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_490C9CD44BADB0C2AD998860B72A2DCA" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3F7B32FAED3936B63A1C8860B72A35E7" xlink:to="loc_us-gaap_AwardTypeAxis_490C9CD44BADB0C2AD998860B72A2DCA" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8DD045A19040F6BB7BE48860B72ABDFF_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_490C9CD44BADB0C2AD998860B72A2DCA" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8DD045A19040F6BB7BE48860B72ABDFF_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8DD045A19040F6BB7BE48860B72ABDFF" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_490C9CD44BADB0C2AD998860B72A2DCA" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8DD045A19040F6BB7BE48860B72ABDFF" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_28F711A6DE39D8BB2F298860B72A25C1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8DD045A19040F6BB7BE48860B72ABDFF" xlink:to="loc_us-gaap_EmployeeStockOptionMember_28F711A6DE39D8BB2F298860B72A25C1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="loc_us-gaap_RestrictedStockMember_200BB7CBD3610B286F9E8860B72AB4B1" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8DD045A19040F6BB7BE48860B72ABDFF" xlink:to="loc_us-gaap_RestrictedStockMember_200BB7CBD3610B286F9E8860B72AB4B1" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_4B238284537CBED91CE78860B72A42BE" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_4B238284537CBED91CE78860B72A42BE" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_68DD92990602EAB5F26C8860B72AB40E" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_68DD92990602EAB5F26C8860B72AB40E" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_Sharebasedcompensationvestingpercentageannual" xlink:label="loc_odc_Sharebasedcompensationvestingpercentageannual_3F379183CD8172A327B38860B72A6779" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:to="loc_odc_Sharebasedcompensationvestingpercentageannual_3F379183CD8172A327B38860B72A6779" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_Numberyearsaftergrantdatevestingstarts" xlink:label="loc_odc_Numberyearsaftergrantdatevestingstarts_F837212D739A1C9E88EA8860B72AA0B3" xlink:type="locator" />
    <link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:to="loc_odc_Numberyearsaftergrantdatevestingstarts_F837212D739A1C9E88EA8860B72AA0B3" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_Numberofconsecutiveyearsvestingoccursafterinitialvestdate" xlink:label="loc_odc_Numberofconsecutiveyearsvestingoccursafterinitialvestdate_D8CFB086E73575E2AE0F8860B72A663E" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:to="loc_odc_Numberofconsecutiveyearsvestingoccursafterinitialvestdate_D8CFB086E73575E2AE0F8860B72A663E" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_05162AC120AF7844CB948860B72A963C" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_05162AC120AF7844CB948860B72A963C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions_87CE73D5B133CAA4709F8860B72AABC6" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions_87CE73D5B133CAA4709F8860B72AABC6" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions_266F4C4A50BA91B015C18860B72A3B31" xlink:type="locator" />
    <link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions_266F4C4A50BA91B015C18860B72A3B31" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_915227E84F459F6F70DC8860B72A5470" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_915227E84F459F6F70DC8860B72A5470" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_Sharebasedcompensationarrangementbysharebasedpaymentawardvestingperiodminimum" xlink:label="loc_odc_Sharebasedcompensationarrangementbysharebasedpaymentawardvestingperiodminimum_BB8669B7283C81193E798860B72A678C" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:to="loc_odc_Sharebasedcompensationarrangementbysharebasedpaymentawardvestingperiodminimum_BB8669B7283C81193E798860B72A678C" xlink:type="arc" />
    <link:loc xlink:href="odc-20161031.xsd#odc_Sharebasedcompensationarrangementbysharebasedpaymentawardvestingperiodmaximum" xlink:label="loc_odc_Sharebasedcompensationarrangementbysharebasedpaymentawardvestingperiodmaximum_13ECC7FA9EE99FE377F78860B72A6C32" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:to="loc_odc_Sharebasedcompensationarrangementbysharebasedpaymentawardvestingperiodmaximum_13ECC7FA9EE99FE377F78860B72A6C32" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_5644DE8C5AE30445410E8860B72ADB46" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_5644DE8C5AE30445410E8860B72ADB46" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_6BC8E02ABB2F734918D38860B72ABB2F" xlink:type="locator" />
    <link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_AA452D950A708F1F9CF48860B72A9567" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_6BC8E02ABB2F734918D38860B72ABB2F" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/StockBasedCompensationStockOptionDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E38E39C96E57658FC4B68860B739908D" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_FCD5E5550FBBCA3654BC8860B739C28C" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E38E39C96E57658FC4B68860B739908D" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_FCD5E5550FBBCA3654BC8860B739C28C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_B2872E34D8BFA72824208860B7397477" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_FCD5E5550FBBCA3654BC8860B739C28C" xlink:to="loc_us-gaap_AwardTypeAxis_B2872E34D8BFA72824208860B7397477" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9AB001E95B2DF7294B878860B739C872_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_B2872E34D8BFA72824208860B7397477" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9AB001E95B2DF7294B878860B739C872_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9AB001E95B2DF7294B878860B739C872" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_B2872E34D8BFA72824208860B7397477" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9AB001E95B2DF7294B878860B739C872" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_D57E75D2D03A83032B9D8860B739B848" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9AB001E95B2DF7294B878860B739C872" xlink:to="loc_us-gaap_EmployeeStockOptionMember_D57E75D2D03A83032B9D8860B739B848" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_13B89F2F33CB91D78D538860B7399703" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E38E39C96E57658FC4B68860B739908D" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_13B89F2F33CB91D78D538860B7399703" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_C8139326BFB6EE2009EB8860B739C591" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E38E39C96E57658FC4B68860B739908D" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_C8139326BFB6EE2009EB8860B739C591" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_A95ABC7AF2DAE78EC4248860B7397BDD" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E38E39C96E57658FC4B68860B739908D" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_A95ABC7AF2DAE78EC4248860B7397BDD" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_9CD505A0726492CC5DBF8860B7390654" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E38E39C96E57658FC4B68860B739908D" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_9CD505A0726492CC5DBF8860B7390654" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_4BA642135DBA6525FE0E8860B73969F7" xlink:type="locator" />
    <link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E38E39C96E57658FC4B68860B739908D" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_4BA642135DBA6525FE0E8860B73969F7" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_88016F251CC59E98788F8860B7399941" xlink:type="locator" />
    <link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E38E39C96E57658FC4B68860B739908D" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_88016F251CC59E98788F8860B7399941" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_DCC7B56D44AD7BB4C9B78860B7395CE3" xlink:type="locator" />
    <link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E38E39C96E57658FC4B68860B739908D" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_DCC7B56D44AD7BB4C9B78860B7395CE3" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_B2D97CFD895A1914BD448860B7391933" xlink:type="locator" />
    <link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_E38E39C96E57658FC4B68860B739908D" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_B2D97CFD895A1914BD448860B7391933" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/StockBasedCompensationSummaryOfRestrictedStockTransactionsDetails" xlink:type="extended">
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0DF1D388D7AE49E916D38860B739255C" xlink:type="locator" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3792756E6723DFC426D58860B7397ED1" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0DF1D388D7AE49E916D38860B739255C" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3792756E6723DFC426D58860B7397ED1" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_50E8A21139FCB9E3EE7E8860B7390CF8" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3792756E6723DFC426D58860B7397ED1" xlink:to="loc_us-gaap_StatementClassOfStockAxis_50E8A21139FCB9E3EE7E8860B7390CF8" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_3A4DB61F70CE62A40D678860B7395875_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_50E8A21139FCB9E3EE7E8860B7390CF8" xlink:to="loc_us-gaap_ClassOfStockDomain_3A4DB61F70CE62A40D678860B7395875_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_3A4DB61F70CE62A40D678860B7395875" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_50E8A21139FCB9E3EE7E8860B7390CF8" xlink:to="loc_us-gaap_ClassOfStockDomain_3A4DB61F70CE62A40D678860B7395875" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_1597E0DE6ECE7F70C7718860B73918AC" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3792756E6723DFC426D58860B7397ED1" xlink:to="loc_us-gaap_AwardTypeAxis_1597E0DE6ECE7F70C7718860B73918AC" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_87922BC0955F7CBE3A228860B739FC63_default" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_1597E0DE6ECE7F70C7718860B73918AC" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_87922BC0955F7CBE3A228860B739FC63_default" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_87922BC0955F7CBE3A228860B739FC63" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_1597E0DE6ECE7F70C7718860B73918AC" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_87922BC0955F7CBE3A228860B739FC63" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="loc_us-gaap_RestrictedStockMember_13328AE18E77B42FF36F8860B7397D40" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_87922BC0955F7CBE3A228860B739FC63" xlink:to="loc_us-gaap_RestrictedStockMember_13328AE18E77B42FF36F8860B7397D40" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_9AD55711302405CD67728860B739AA95" xlink:type="locator" />
    <link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0DF1D388D7AE49E916D38860B739255C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_9AD55711302405CD67728860B739AA95" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_E7E522643B88A9CF43418860B7390DD5" xlink:type="locator" />
    <link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0DF1D388D7AE49E916D38860B739255C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_E7E522643B88A9CF43418860B7390DD5" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_45BEC52DC81F6572E3648860B73911B4" xlink:type="locator" />
    <link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0DF1D388D7AE49E916D38860B739255C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_45BEC52DC81F6572E3648860B73911B4" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_0BEEA145AE10D40FDE208860B739E76C" xlink:type="locator" />
    <link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0DF1D388D7AE49E916D38860B739255C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_0BEEA145AE10D40FDE208860B739E76C" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_146D922B5BADB7CB91C18860B7394859" xlink:type="locator" />
    <link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0DF1D388D7AE49E916D38860B739255C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_146D922B5BADB7CB91C18860B7394859" xlink:type="arc" />
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2015/elts/us-gaap-2015-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_7E659F91FA8BD70F32A88860B73961D6" xlink:type="locator" />
    <link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0DF1D388D7AE49E916D38860B739255C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_7E659F91FA8BD70F32A88860B73961D6" xlink:type="arc" />
  </link:definitionLink>
  <link:definitionLink xlink:role="http://www.oildri.com/role/StockBasedCompensationTables" xlink:type="extended" />
</link:linkbase>
